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Operating systems are an important type of system software. They provide a lot of facilities to the users.
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| State different functions of operating systems |
Following are the main functions performed by Operating System:
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Explain Different Functions of Operating System |
1. Process Management
CPU can perform one task at one time. If there are many tasks, operating system decides which task should get the CPU first. Operating system also maintains a queue of jobs for processing one by one.
2. Main Memory Management
Operating system manages memory (RAM)for many running programs. It allocates memory area to different programs. It de-allocates the memory area when a aktivitas is terminated. It also manages efficient use of RAM during processing.
3. Secondary Storage Management
Operating system manages secondary storage. It manages the stored files and folders on disk in a proper way.
You can create and save files and folders, edit files, copy files, move files from one location to another within one computer or from computer to computer, and delete files and folders etc, with the help oif operating system.
4. I/O System management
It manages
Input/
output operations. It controls I/O devices like mouse, keyboard, monitor and printer etc.
5. File Management
It manages files, for example:
- creation of files
- deletion of files
- copying of files.
- editing files
- moving of files etc.
6. Protection System
There are many processes of different users in memory at a time. So operating system provides protection so that no process can interfere with another process activity. Operating system makes sure that each and every process performs within its own boundaries.
Operating system provides access to shared resources by networking system.
Users can share files and hardware resources like printer.
8. Command Interpreter system
Operating system provides command interpreter for reading and executing user commands. For example, Microsoft Windows XP provides Command Prompt to enter and execute commands.
9. Booting
Operating system starts the computer. It checks the computer and makes it ready to work.
10. Loading and Execution
Operating system provides the facility to load programs in memory easily and then execute it.
11. Data Security
Operating system protects the
data stored on the computer from illegal use, modification or deletion.
12 Device Controlling
Operating system controls all devices attached to
computer with the help of device drivers. Device driver is a software that permits a computer system to communicate with a device. e.g., device driver
software for a modem comes with it on CD. We have to
install device driver before using a device.
13. Printing Controlling
Operating System also manages and controls printing function. If a user issues two or more print commands at a time, it manages print queue for printing each document one by one in a proper sequence.
14. Providing User Interface
Operating system provides User interface to interact with the computer. User Interface may be Graphical user interface (GUI) or Command line interface. For example, Microsoft Windows XP provides an easy to use graphical user interface called GUI. Whereas DOS provides a Command Line Interface called CLI.
